A.I.TECH AIT-DADO-5 Steel Coppered Nut 14x1,5 for VW / AUDI / PORSCHE / SEAT ymm_47 This allows the exhaust gases

This allows the exhaust gases to mix from both sides of the engine

Approximately 40% weight reduction

Further control over the sound of the Evolution Line (Titanium) exhaust system can be achieved by installing the optional Akrapovič Sound Kit

Valves: 2 (one per side of muffler)

A.I.TECH AIT-DADO-5 Steel Coppered Nut 14x1,5 for VW / AUDI / PORSCHE / SEAT ymm_47 This allows the exhaust gasesKnowledge from competition experience has led the manufacturer to use a dissimilar material for the nut from that for the wheel stud. The additional copper coating of the nut assures security. OD 25mm EX 19mm Spherical SEAT Total lenght 28mm